Gable windows, we cannot decide

If there will be no additional double-wing windows and actual use as living space is intended, then as much glass as possible. Roller shutters are of course out due to the pointed shape, which might be reasonable for living and sleeping space usage.

If there will be no additional double casement windows and indeed use as living space is intended, then as much glass as possible. Roller shutters are of course out of the question with the pointed shape, which might be sensible for living and sleeping space usage.

Very important point. If the bedroom or living room has a large triangular window and double casement windows... Be sure to build it so that shading is possible from the outside, otherwise the room will be a disaster. Alternatively, plan for a split air conditioner right away.